Thanks, I will ask next time I'm at Joann. My Walmart just added fabric and notions back into the store (a good sign, I hope, that more people are sewing and quilting again). In the meantime, I have some foamcore board in the my sewing room. I could wrap batting around it and then cover in muslin. I have a pretty red quilted vinyl that's pretty heavy, and I don't want to fold it in case it gets creases.